The IRS has updated Publication 5258. Publication 5258 is the ACA Information Returns Submission Composition and Reference Guide and is used to electronically file Forms 1094 B and C, and Form 1095 B and C with the IRS.
Tables 5-4, 5-8, and 5-10 were updated to remove a statement that said “UserID is not required for UI submissions.” Section 188.8.131.52 was updated to include a missing “Al” for Algorithm, and Section 184.108.40.206 and 220.127.116.11 updated canonicalization method algorithms and the ACA Security Header User ID.
To view the updated Publication 5258, please click here.
About the AuthorMore Content by Adam Rivera